YARA · Malpedia signator rules
MALPEDIA_Win_Kimjongrat_Auto
autogenerated rule brought to you by yara-signator
MalwareKimjongratMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Kimjongrat.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-kimjongrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Kimjongrat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "5566b500-a4f9-59c1-9949-5a48614fe2fa"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.kimjongrat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.kimjongrat_auto.yar#L1-L134"
= "N/A"
= "ae4aa27f3b130f9a25de75177de58ad1ac53d730877055e018cbcb8dd9175611"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { ffb68c010000 8d85b4f9ffff ffb688010000 57 50 e8???????? 8b8db0f9ffff }
$sequence_1 = { eb07 c605????????00 56 e8???????? 83c404 5e 5b }
$sequence_2 = { eb4e c6841528ffffff28 eb44 c6841528ffffff24 eb3a c6841528ffffff5d eb30 }
$sequence_3 = { eb03 53 6a7a 57 e8???????? 8945e4 83c410 }
$sequence_4 = { 8b4508 8b5df4 83c45c 40 50 6a48 53 }
$sequence_5 = { e9???????? c6840de8faffff23 e9???????? c6840de8faffff21 e9???????? c6840de8faffff25 e9???????? }
$sequence_6 = { ff4624 89460c 5e 5d c3 33c0 5e }
$sequence_7 = { e9???????? c6840d98a5ffff76 e9???????? c6840d98a5ffff65 e9???????? c6840d98a5ffff75 e9???????? }
$sequence_8 = { 8d45e8 50 53 ff75e0 e8???????? 8bf0 83c410 }
$sequence_9 = { e8???????? 83c404 ff750c 3b7dd4 7469 8b4514 3c25 }
condition:
7 of them and filesize < 1572864
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ffb68c010000 8d85b4f9ffff ffb688010000 57 50 e8???????? 8b8db0f9ffff } | |
| $sequence_1 | hex | { eb07 c605????????00 56 e8???????? 83c404 5e 5b } | |
| $sequence_2 | hex | { eb4e c6841528ffffff28 eb44 c6841528ffffff24 eb3a c6841528ffffff5d eb30 } | |
| $sequence_3 | hex | { eb03 53 6a7a 57 e8???????? 8945e4 83c410 } | |
| $sequence_4 | hex | { 8b4508 8b5df4 83c45c 40 50 6a48 53 } | |
| $sequence_5 | hex | { e9???????? c6840de8faffff23 e9???????? c6840de8faffff21 e9???????? c6840de8faffff25 e9???????? } | |
| $sequence_6 | hex | { ff4624 89460c 5e 5d c3 33c0 5e } | |
| $sequence_7 | hex | { e9???????? c6840d98a5ffff76 e9???????? c6840d98a5ffff65 e9???????? c6840d98a5ffff75 e9???????? } | |
| $sequence_8 | hex | { 8d45e8 50 53 ff75e0 e8???????? 8bf0 83c410 } | |
| $sequence_9 | hex | { e8???????? 83c404 ff750c 3b7dd4 7469 8b4514 3c25 } |
Condition
7 of them and filesize < 1572864In plain words (Heuristic)
- The file must be smaller than 1572864 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 5566b500-a4f9-59c1-9949-5a48614fe2fa
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04